Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 1 Winner | 100% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 2 O/U 8.5 | 100% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 1 O/U 8.5 | 100% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 1 O/U 9.5 | 100% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 1 O/U 10.5 | 100% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Match O/U 22.5 | 51% |
| Completed Match | 50% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Total Sets: O/U 2.5 | 50% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Match O/U 21.5 | 50% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Match O/U 23.5 | 50% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse | 40% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set Handicap +/-1.5 | 25% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 2 Winner | 0% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 2 O/U 9.5 | 0% |
| ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse Set 2 O/U 10.5 | 0% |
Market context
Based on real-money crowd forecasting, itf bali: sam ryan ziegann vs thanaphat boosarawongse stands at 100% likelihood according to current market consensus. This market refers to the tennis match between Sam Ryan Ziegann and Thanaphat Boosarawongse in the ITF Men Bali, originally scheduled for July 24, 2026 at 2:45AM ET. This market w…
Methodology
This page reads ITF Bali: Sam Ryan Ziegann vs Thanaphat Boosarawongse on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
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